Chapter 4 Remote Interface Reference

The MEASure? and CONFigure Commands

MEASure:CURRent:AC? {<range>MINMAXDEF},{<resolution>MINMAXDEF} Preset and make an ac current measurement with the specified range and resolution. The reading is sent to the output buffer. For ac measurements, resolution is actually fixed at 61⁄2 digits. The resolution parameter only affects the front-panel display.

MEASure:RESistance? {<range>MINMAXDEF},{<resolution>MINMAXDEF} Preset and make a 2-wire ohms measurement with the specified range and resolution. The reading is sent to the output buffer.

MEASure:FRESistance? {<range>MINMAXDEF},{<resolution>MINMAXDEF} Preset and make a 4-wire ohms measurement with the specified range and resolution. The reading is sent to the output buffer.

MEASure:FREQuency? {<range>MINMAXDEF},{<resolution>MINMAXDEF} Preset and make a frequency measurement with the specified range and resolution. The reading is sent to the output buffer. For frequency measurements, the multimeter uses one “range” for all inputs between

3 Hz and 300 kHz. With no input signal applied, frequency measurements return “0”.

MEASure:PERiod? {<range>MINMAXDEF},{<resolution>MINMAXDEF} Preset and make a period measurement with the specified range and resolution. The reading is sent to the output buffer. For period measurements, the multimeter uses one “range” for all inputs between

0.33seconds and 3.3 ∝sec. With no input signal applied, period measurements return “0”.

MEASure:CONTinuity?

Preset and make a continuity measurement. The reading is sent to the output buffer. The range and resolution are fixed for continuity tests (1 kΩ range and 51⁄2 digits).

MEASure:DIODe?

Preset and make a diode measurement. The reading is sent to the output buffer. The range and resolution are fixed for diode tests (1 Vdc range with 1 mA current source output and 51⁄2 digits).

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Agilent Technologies 34401A manual MEASureCONTinuity?, MEASureDIODe?
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34401A specifications

Agilent Technologies 34401A is a highly reputable digital multimeter (DMM), renowned for its accuracy, versatility, and performance in a wide range of measurement applications. First introduced in the early 1990s, the 34401A has become a staple in laboratories, manufacturing environments, and educational institutions due to its robust build and comprehensive features.

One of the standout characteristics of the 34401A is its impressive accuracy, boasting a basic DC voltage accuracy of 0.0035%, making it ideal for precise measurements in electronic testing. The multimeter offers a wide range of measurement capabilities, including voltage (DC and AC), current (DC and AC), resistance, frequency, and continuity test, making it a highly versatile tool for engineers and technicians.

The 34401A utilizes a 6½-digit resolution, enabling the user to measure small changes in electrical signals with remarkable precision. With a sampling rate of up to 1000 readings per second, it can handle dynamic test requirements, providing timely results without sacrificing measurement integrity.

In terms of connectivity, the Agilent 34401A includes a GPIB (General Purpose Interface Bus) for remote operation, allowing users to automate their testing processes and integrate the multimeter easily into larger measurement systems. This feature is particularly beneficial in automated test environments, where speed and accuracy are paramount.

Additionally, the DMM incorporates advanced measurement functions, such as statistical analysis, including mean, standard deviation, and minimum/maximum readings, which provide users with valuable insights into their data. The instrument's user-friendly interface, complete with a clear digital display and intuitive controls, enhances usability and ensures that users can easily navigate its various functions.

Robust software support further extends the capabilities of the Agilent 34401A. It is compatible with a range of software tools for data logging and analysis, enabling users to efficiently document and analyze their measurements over time.

In summary, Agilent Technologies 34401A stands out in the realm of digital multimeters due to its high accuracy, extensive measurement functionalities, and user-friendly features. Whether for research and development, quality control, or educational purposes, the 34401A remains a preferred choice for professionals demanding reliable and precise measurement solutions. Its enduring legacy in the industry speaks to its performance and reliability, making it an essential tool for anyone involved in electronic testing and measurement.
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